Berlin advice

You should compile all this into some sort of guide book.

Been thinking of just seeing how far into europe I could get oneday without a ticket.

Long and short = you will get catched, they will take the (€50? €60?) fine off you. But tell 'em you didn't understand and some bloke told you blah blah, bet they never get anyone trying that.

I think this would break the 2nd law of thermodynamics if true.

If you definitely will get caught.. then everyone would buy a ticket But if that was true, you wouldn't need any ticket inspectors.

I take the fact ticket inspectors exist as proof on average you wont get caught.. the more ticket inspectors the more my belief is re-enforced.